The authors of the acclaimed book The Spirit Level showed conclusively that inequality has a negative effect on almost everything, from public health, education, obesity, mental health and social mobility. And Australia is among the world's most unequal nations on earth.

Now latest research from two epidemiologists Kate Pickett and Richard Wilkinson explores the powerful and damaging psychological effects of material and economic equality.

And yet, as inequality widens it also has a profound effect on society as a whole. In fact, it seems that nobody is entirely immune, not even those at the top.

Guests: Richard Wilkinson and Kate Pickett, authors of The Inner Level, published by Allen Lane